Improvement in fireplaces



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ISRAEL KEPLER, OF COREY, PENNSYLVANIA.

Letters Patent No. 70,858, dated November 12, 1867.

IMPROVEMENT IN FIREPLACES.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, ISRAEL KErLnR, of Corry, in the county of Erie, and State of Pennsylvania, have invented certain new and useful Improvements in Air-Heating Fireplaces; and I do hereby declare the following to be a. full, clear, and exact description of the same, reference being had to the accompanying drawings,

making a part of this specification, in which Figure 1 represents a front view of the fireplace, with a portion of the breast and jamb broken away to show the fire and flue-back.

Figure 2 represents a transverse vertical section through the fireplace and air-heating chamber.

Figure 3 represents a top plan of the gas-flue and air-heating chamber, and hot-air passage or pipe.

Figure 4 represents a horizontalsection of the fireplace, taken through the red line a: a: of fig. 1.

Similar lettersof reference, where they occur in the separate figures, denote like parts in all of them.

I am aware that an air-heating chamber has been used in connection with a fireplace. I am also aware that a corrugated grate-back has long been known and used. These things I do-not lay any claim to.

My invention consists in the use of a corrugated flue and breast-plate above the fire-box or grate, in connection with the air-heating chamberbehind it, so as to increase the heating surface, as also to prevent said flue-plate or back from cracking. I

To enable others skilled in the art to make and :use my invention, I will proceed to describe the same with reference to the drawings. 4

.A' represents the breast of the fireplace; B, the jambs; G, the grate-bars; D, the fire-box; E, the ashpit, and F the air-heating chamber behind the grate. The grate-back G is corrugated, as is common; and the corrugations have been so made as to match the spaces between the grate-bars, to allow the ashes to run down. This involves the necessity of always procuring grate-backs and grates from the same pattern, which isoftcn impossible, and always inconvenient. I make the ridges ofthe corrugations, as seen at a, fig. 4, so that they may just touch or set upon the back bar of the'grate, and thus leave ash-fines, without requiring the grooves of the corrugations and spaces between the grate-bars to match. From the top of the corrugated grate-back G I extend'a corrugated flue-back, H, upwards and forward over the fire-box, so as to take the more intense heat of the fire and burning gases, and thus not only very much increase the radiating surface, but prevent that flue- I back or plate from cracking by its great expansion and contraction, the corrugations admitting ofexpansion and contraction in a very greatdegrec without cracking. The throat of the flue, by the use of the corrugated plate H, will be of the form and shape shown at b b b, fig. 3. The plates G and H may be cast in one piece; but I prefer to cast them in two parts, 0 being the joint between them, so that, if one should burn out or crack before the other, both would not have to be renewed. I p

The air to be heated in the chamber F may enter at the opening d, and, when heated, pass through the hot-air pipe I, and out at e, into the room in which the fireplace is used, or in the room above or alongside of it, as is commonly done. J is the top plate of the hot-air chamber The pipe I passes through this plate, as also through the smoke-flue, as seen in fig. 2. i

Having thus fully described my invention, what I claim, is In connection with thecommon corrugated grate-back, the corrugated extension-plate or back H, projecting over the fire, and continuing up to the throat of the flue, as and for the purpose herein described and represented.

ISRAEL KEPLER. Witnesses: V

R. H. Munnoc'x, J. M Knrtnn. 

